The Epson EcoTank L6290 Ink Tank Printer is a reliable and cost-effective solution for home and office printing needs. It delivers high-quality prints at a low cost, making it ideal for everyday use. This printer features an advanced ink tank system that reduces printing costs significantly. With its high-capacity ink bottles, you can print thousands of pages without frequent refills. The Epson EcoTank L6290 ensures hassle-free refilling with its spill-free and error-free ink bottles. Enjoy fast and efficient printing with speeds of up to 15.5 images per minute. Whether you need to print documents, reports, or photos, this printer handles it all with ease. It also supports automatic duplex printing, helping you save paper and reduce waste. The Epson EcoTank L6290 Ink Tank Printer offers wireless connectivity for added convenience. You can print directly from your smartphone, tablet, or laptop using Wi-Fi or mobile printing apps. The Epson Smart Panel app makes it easy to control the printer from your device. With its 4-in-1 functionality, this printer offers printing, scanning, copying, and faxing in one compact design. The automatic document feeder (ADF) allows you to scan or copy multiple pages effortlessly, improving your productivity. This printer is built to last with Epson’s PrecisionCore technology, delivering sharp and vibrant prints every time. It works well for both black-and-white and color printing, ensuring professional results. Upgrade your printing experience with the Epson EcoTank L6290 Ink Tank Printer and enjoy cost savings, convenience, and high-quality output. Specifications: Function : Print, copy, scan & fax wirelessly with double-sided printing and ADF Printing Speed : 33 ppm Monochrome, 20 ppm Color Duplex Printing : 6,5 A4 ppm Monochrome, 4,5 A4 ppm Color
The Epson EcoTank L3256 All-in-One Ink Tank Printer is designed for high-volume, low-cost printing. This versatile printer offers printing, scanning, and copying in one compact device. With its innovative ink tank system, the Epson L3256 ensures you save on printing costs. The high-capacity ink tanks allow you to print thousands of pages without frequent refills. Setting up the Epson EcoTank L3256 is simple and quick. Its wireless connectivity allows you to print from your smartphone, tablet, or computer with ease. No need for complicated network setups. Enjoy the convenience of borderless printing with the Epson EcoTank L3256. Whether you’re printing photos or documents, the results are crisp and vibrant, perfect for any project. The Epson L3256 All-in-One Ink Tank Printer is environmentally friendly. It reduces waste with its refillable ink tanks, cutting down on the use of disposable cartridges. Its compact and sleek design fits neatly into any space, whether at home or in the office. The user-friendly control panel makes navigating the printer’s features a breeze. With reliable performance, the Epson EcoTank L3256 handles all your printing needs efficiently. The durable print head ensures high-quality output every time, maintaining the standard you expect from Epson. In conclusion, the Epson L3256 All-in-One Ink Tank Printer is a smart choice for those seeking efficiency and cost savings. Upgrade to the L3256 today and experience hassle-free, high-quality printing. Specifications: Print, Scan, Copy Wi-Fi & Wi-Fi Direct Maximum Resolution : 5760 x 1440 dpi Print Speed : (Black) 33ppm, (Color) 15ppm Borderless printing up to 4R
Epson LQ-2190 Dot Matrix Printer is a 24-pin wide carriage impact printer designed for high-volume business printing. It delivers fast and reliable output for invoices, delivery notes, labels, and multi-part forms. It supports A3-wide printing and handles continuous paper and multi-part forms with strong consistency. The printer provides flexible paper paths and stable performance for long print runs. This Epson LQ-2190 Dot Matrix Printer focuses on durability and efficient operation for demanding office environments. It supports up to 6-part forms (1 original + 5 copies), making it suitable for carbon-copy workflows and logistics printing. It offers multiple connectivity options including USB and parallel interfaces for flexible integration. Specifications: 24-pin impact dot matrix printing system A3 wide carriage with 136-column output support Print speed up to 576 cps in high-speed draft mode Supports up to 6-part multi-copy forms (1 original + 5 copies) Multiple paper paths: front, top, bottom, and rear feed options
XPrinter Portable 80MM The XPrinter Portable 80MM Xprinter XP-P810 has patented function. Power charging by power bank/computer, long lasting battery life(Up to 2000mAh) support IOS app and Android device connection, support Bluetooth and Wifi connection. large paper roll capacity(diameter 50mm). SPECIFICATION Printing Printing method Direct thermal Paper width 79.5±0.5mm Paper roll diameter 50mm Paper thickness 0.06 – 0.08mm Column capacity 576dots/line 512dots/line Printing speed 70mm/s Interface USB+Bluetooth / USB+Wifi / USB+Wifi+Bluetooth Character size ANK,Font A:1.5×3.0mm(12×24 dots) Font B:1.1×2.1mm(9×17 dots) simplified/traditional Chinese:3.0×3.0mm(24×24 dots) Barcode Character Extented character sheet PC347(Standard Europe)、Katakana、PC850(Multilingual)、PC860(Portuguese)、 PC863(Canadian-French)、PC865(Nordic)、West Europe、Greek、Hebrew、East Europe、Iran、WPC1252、PC866(Cyrillic#2)、PC852(Latin2)、PC858、IranII、Latvian、Arabic、PT151(1251) Barcode types 1D:UPC-A/UPC-E/JAN13(EAN13)/JAN8(EAN8)/CODE39/ITF/CODABAR/CODE93/CODE128 2D:QR CODE/PDF417 Power Power adaptor Input :AC 110V/240V, 50~60Hz, Output:DC 9V/2A. Printer input DC 9V/2A Battery 7.4V/2000mAh Physical characteristics Gross weight 325g Dimensions 136×116×60mm(D×W×H) Environmental Requirements Operation environment 0~45℃, 10~80% RH Storage environment -10~60℃, 10~90% RH(no condensation) Buffer Input buffer 32k bytes NV Flash 64k bytes Software Emulation ESC/POS Driver Windows/Linux/Android/Mac Utility Windows & Linux test Utility SDK iOS/Android/Windows Q:WHAT’S YOUR MAIN PRODUCT LINE? A:Specialized in Receipt printers, Label Printers, Mobile Printers, Panel printers, Kiosk printer, Dot Matrix Printer , Bluetooth printers, Shop bill printer. Q:WHAT IS THE WARRANTY FOR YOUR PRINTERS? A:We support 12 months for all of our products. Q:WHAT IS PRINTER DEFECTIVE RATE? A:Less than 0.3% Q:IF THE GOODS ARE DAMAGED, WHAT CAN WE DO ? A:1% FOC parts dispatched with shipment. When it is damaged, you can replace it directly. Q:WHAT’S YOUR DELIVERY TERMS ? A:Delivery terms can be EX-WORKS, FOB or C&F. Q:WHAT’S YOUR LEADING TIME? A:For less than 1000pcs, 7-10 working days. For more than 1000pcs, 10-15 working days. Q:WHAT ARE YOUR PRODUCT COMMAND? A:Thermal printer compatible with ESC\POS. Label printer compatible with TSPL\ EPL\ DPL\ ZPL emulation. Q:HOW DO YOU CONTROL QUALITY? A:We are a company with ISO9001:2015 international QMS certification. Our products have obtained CCC, CE, FCC, RoHS, KC, SAA, BIS, BSMI certifications. Specifications: Specifications Printing Printing method Direct thermal Paper width 79.5±0.5mm Paper roll diameter 50mm Paper thickness 0.06 – 0.08mm Column capacity 576dots/line 512dots/line Printing speed 70mm/s Interface USB+Bluetooth / USB+Wifi / USB+Wifi+Bluetooth Character size ANK,Font A:1.5×3.0mm(12×24 dots) Font B:1.1×2.1mm(9×17 dots) simplified/traditional Chinese:3.0×3.0mm(24×24 dots) 1 year warranty Manufacturer Link
Canon imageCLASS MF643Cdw Smart and Productive 3-in-1 Colour Multifunction Printer Designed to keep up with business demands, the MF643Cdw provides in quality of functions. Specifications: Specifications : Print, Scan, Copy Print Speed (A4): Up to 21 ppm (mono/colour) Print Resolution: Up to 1,200 x 1,200 dpi (equivalent) Gigabit Ethernet, WiFi, Direct Connection Recommended Monthly Print Volume: 250 – 2,500 pages 3-year warranty Manufacturer Link
Compact, affordable all-in-one inkjet printer for home and small office use—print, scan, and copy in color with easy wireless setup, mobile printing, and HP’s efficient ink system.
Looking for a reliable and affordable printing solution? Meet the Brother MFC-L5710DW Wireless Mono Laser Printer, your go-to choice for cost-effective printing needs. Firstly, revel in its user-friendly design, making setup and operation a breeze. Experience seamless printing with a device that understands simplicity. Transitioning from paper to digital? The MFC-L5710DW offers seamless connectivity, allowing you to print directly from your smartphone or tablet. Say goodbye to complex printing processes. Efficiency is key, and this printer delivers. With high-speed printing capabilities, your documents are ready in a flash. Boost productivity without compromising on print quality. Elevate your cost savings with automatic duplex printing. Save on paper costs while contributing to a greener environment. It’s an eco-friendly choice for the budget-conscious consumer. Equipped with a robust scanner and copier, this all-in-one printer tackles multiple tasks effortlessly. Streamline your workflow with a single device that does it all. Worried about running out of toner? The MFC-L5710DW’s toner save mode ensures you get the most out of each cartridge, extending the life of your supplies and reducing replacement frequency. In conclusion, the Brother MFC-L5710DW Wireless Mono Laser Printer is a practical and budget-friendly choice for both home and office printing needs. Experience efficiency without compromise – make this printer your affordable printing companion today! Specifications: Functions : Print, Scan, Copy, Fax Type : Laser Printer Speed : Up to 48ppm
Original product name: HP Printers Color Laser / A4 Format CF388A Color Laser Jet 452nw-28ppm B/C,HP ImageREt 3600 resolution,256MB Memory,USB,1GB Network,WIFI,1200 MHZ Processor.duty cycle 50000 pages,(supplies 401a ) HP Printers Color Laser / A4 Format CF388A Color Laser Jet 452nw-28ppm B/C,HP ImageREt 3600 resolution,256MB Memory,USB,1GB Network,WIFI,1200 MHZ Processor.duty cycle 50000 pages,(supplies 401a )
The Canon i-SENSYS MF657Cdw – Multifunction Color Laser Printer delivers reliable colour printing for offices and workgroups. First, it prints, scans, copies, and faxes in one compact device. The printer produces sharp documents with up to 1200 × 1200 dpi resolution. It also prints up to 21 pages per minute on A4, keeping daily tasks efficient. In addition, the printer supports automatic duplex printing and copying. Therefore, teams save paper and complete multi-page jobs faster. A 50-sheet automatic document feeder and a 250-sheet paper cassette improve workflow during larger print tasks. Moreover, the printer offers flexible connectivity with USB, Ethernet, and Wi-Fi. Users can also print from mobile devices using AirPrint, Mopria, or Canon PRINT Business. For example, staff can print documents directly from smartphones or cloud storage services. Specifications: Multifunction design with print, scan, copy, and fax capabilities Print speed up to 21 ppm with 1200 × 1200 dpi resolution Automatic duplex printing and copying for efficient workflows Wi-Fi, Ethernet, and USB connectivity with mobile printing support 50-sheet ADF and 250-sheet paper tray for office productivity
Pantum P2200 Printer Speed 20 ppm (A4) / 21 ppm (Letter), Resolution 1,200×1,200dpi, 600MHz Processor, 64MB Memory , 15,000 pages Duty Cycle, Hi-Speed USB 2.0
The Canon Pixma TS3640 Printer is a reliable and compact printer for home and office use. It delivers high-quality prints, scans, and copies with ease. This all-in-one printer is designed to meet your everyday printing needs. With wireless connectivity, the Canon Pixma TS3640 lets you print directly from your smartphone, tablet, or laptop. You can connect using Wi-Fi or the Canon PRINT app for a smooth printing experience. No need for cables or complicated setups. This printer offers sharp text and vibrant colors for both documents and photos. Whether you’re printing schoolwork, business reports, or family photos, the results are always clear and professional. The borderless photo printing feature allows you to print stunning images without margins. The Canon Pixma TS3640 Printer is easy to use, with a simple control panel and an intuitive display. You can adjust settings quickly and start printing in seconds. The Auto Power On/Off feature helps save energy by turning off the printer when it’s not in use. With affordable ink cartridges, this printer is cost-effective. The optional XL ink cartridges let you print more pages before needing a replacement, saving time and money. Its compact and stylish design fits perfectly on any desk or workspace. It’s lightweight and doesn’t take up much space, making it ideal for small offices or home setups. Get high-quality prints and seamless wireless functionality with the Canon Pixma TS3640 Printer. Perfect for students, professionals, and home users. Specifications: Functions : Wi-Fi, Print, Copy, Scan, Cloud Print Resolution : Up to 4800 1 x 1200 dpi Print Technology : 2 FINE Cartridges (Black and Colour) Mono Print Speed : Approx. 7.7 ipm Color Print Speed : Approx. 4.0 ipm Standard Ink Cartridges : PG-445, PG-445XL (Black), CL-446, CL-446XL (Colour)
Brand CANON Category INK CARTRIDGE Type canon Inkjet Printer Cartridges and Ink Supplies Model number Canon Ink Cartridge, Black PG-445 manufacturer link
The HP DesignJet T1700 Printer (W6B55A) is a large‑format inkjet printer made for fast and accurate wide‑format printing. First, it prints technical drawings, posters, and maps up to 44 in wide with a high maximum resolution of up to 2400 × 1200 dpi and speeds up to 116 A1 per hour, so you stay productive on bigger jobs. In addition, it features six ink colours including cyan, magenta, yellow, photo black, matte black, and gray, with three universal printheads delivering detailed colour and line accuracy of about ±0.1 %. It handles sheet feed, roll feed, and has an automatic cutter for smooth output finishing. Moreover, the printer includes robust connectivity with Ethernet and USB ports, so you can print from PCs, Macs, or mobile devices using HP Click or HP Smart apps. A 500 GB self‑encrypting hard drive and 128 GB memory help manage complex files without delays. Specifications: High‑resolution wide‑format printing up to 2400 × 1200 dpi and 44 in wide output Fast print speed up to 116 A1 per hour for high productivity Six‑colour ink system with universal printheads for detailed graphics and colour accuracy Ethernet and USB connectivity with mobile app support for flexible printing Large internal storage and memory for complex file handling and secure printing
The Zebra TC15 Rugged Mobile Computer is a durable device built for enterprise and field use. First, its 6.5-inch HD+ display delivers clear visuals, even in bright outdoor conditions. The touchscreen supports responsive input for quick navigation. In addition, 4GB RAM and 64GB storage enable smooth multitasking and reliable data handling. Moreover, its rugged design withstands drops, dust, and water exposure, ensuring long-term performance. The device features advanced scanning capabilities for barcodes and inventory management. Furthermore, wireless connectivity options, including Wi-Fi and Bluetooth, support seamless communication with other devices and networks. Finally, the Zebra TC15 combines rugged durability, versatile performance, and user-friendly features in one mobile computer. Overall, it is ideal for logistics, retail, field service, and industrial applications. Specifications: 6.5″ HD+ touchscreen display 4GB RAM and 64GB internal storage Rugged design with drop, dust, and water resistance Advanced barcode scanning capabilities Wi-Fi and Bluetooth connectivity
Canon Laser – 4 in 1 MF237W PRINT/COPY/SCAN/FAX + Hand Set, 23 PPM, 1200*1200 DPI, ADF 35 PAGE, 256 PAGES Fax MEMORY, 1-sheet multi-purpose tray, 6 seconds First Print Out Time, scan to PC, Intuitive tilting controle panel, Touch Screen, Mobile Print, Network, WI-FI(Airprint, Mopria certified), Duty cycle 15,000 pages per month Cartridge 737 (yield = 2400 pages) INK
NEW Superfast, Low Cost Thermal Receipt Printer including WebPRNT / iOS versions Max. Print Speed : 300mm/sec. Resolution : 203 dpi No. of Columns : 48 / 64 col. Depending on Paper Width Autocutter : Partial Cut (Guillotine) Paper Width : 80mm (58mm Using Paper Guide) Paper Thickness : 0.053 – 0.085mm Paper Roll Standard Option : 83mm Media Presentation : User Selectable Paper Delivery Options with Mounting Bracket included Print Width : 50.8mm (58mm Paper) 72mm (80mm Paper) Sensors : Paper End, Cover Open, Near End Sensor Horizontal & Vertical Interface : Serial, Parallel, USB, Ethernet, Bluetooth (Apple iOS, Android, Windows) and Non Interface versions. Plug-In Options: Serial (IFBD-HD03), 9-pin Serial (HN03), Parallel (HC03), Ethernet (HE07), WebPRNT (HE07X) Unique Ethernet Print on Disconnection Feature : Standard with IFBD-HE07 Option Power Supply : External Option PS60A Power Consumption : 1.9 Amps Printing 0.15 Amps Standby Energy Star : External, Energy Star Qualified PS60 (Optional) Reliability : 60 Million Lines 2 Million Cuts Dimensions (W x D x H) mm Weight : 142 x 203.5 x 132 1.60kg Options : T100/650 Splash Proof Cover VS-T650/100 Display Stand for Vertical Use Plug-in Interfaces (see above) • “Plug-In” WebPRNT hardware solution for PC free network printing WebPRNT Tablet Software Bridge download option from the App Store & Google Play 1 Year Warranty manufacturer link
The Zebra ZD230 Barcode Label Thermal Printer is a reliable thermal transfer printer designed for everyday business labeling. First, it delivers clear and consistent barcode printing with 203dpi resolution. The thermal transfer technology ensures durable labels suitable for long-term applications. In addition, the USB interface allows simple connection to desktops and POS systems. Moreover, the compact design saves workspace and fits easily in retail or warehouse environments. The printer supports various media types to handle labels and tags efficiently. Furthermore, its straightforward operation reduces training time and improves productivity. Finally, the Zebra ZD230 Barcode Label Thermal Printer combines durability, simplicity, and consistent performance in one practical device. Overall, it is ideal for retail stores, logistics operations, and office labeling tasks. Specifications: Thermal transfer printing technology 203dpi print resolution USB connectivity Compact desktop-friendly design Supports multiple label and tag media types
Original product name: HP printer MFP Mono Laser / A4 Format G3Q59A LJ Pro MFP M130fn 4in1, print, scan, copy, fax, Speed 22ppm, Res 1200dpi, 600MHz processor, 128MB Memory, Flatbed, ADF, USB 2.0, Network, E-Print, Airprint, Duty cycle 10,000pages HP printer MFP Mono Laser / A4 Format G3Q59A LJ Pro MFP M130fn 4in1, print, scan, copy, fax, Speed 22ppm, Res 1200dpi, 600MHz processor, 128MB Memory, Flatbed, ADF, USB 2.0, Network, E-Print, Airprint, Duty cycle 10,000pages
HP Color LaserJet Pro MFP 3303sdw (499M6A) is a color laser multifunction printer designed for small and medium office environments. It supports printing, copying, and scanning in one device. HP Color LaserJet Pro MFP 3303sdw delivers efficient and reliable color document performance for daily business use. In addition, it prints up to 25 pages per minute for both black and color documents. It also provides a first page out time of about 10.9 seconds for fast job start. Moreover, it supports up to 600 × 600 dpi print resolution for clear text and graphics. Furthermore, it includes a 50-sheet automatic document feeder for multi-page scanning and copying. It also supports automatic duplex printing for two-sided output. In addition, it provides USB, Ethernet, and dual-band Wi-Fi connectivity for flexible office integration. Finally, it supports a monthly duty cycle up to 40,000 pages for consistent business workloads. HP Color LaserJet Pro MFP 3303sdw delivers stable performance and strong workflow efficiency for office productivity. Specifications: Print, copy, scan multifunction color laser device Up to 25 ppm black and color print speed Automatic duplex (two-sided) printing support 50-sheet automatic document feeder (ADF) Wi-Fi, Ethernet, and USB connectivity support
Original product name: Canon Ink Jet – 4 in 1 PIXMA MX494 Print, Scan, Copy and Fax, ISO: ESAT speed 8.4/4.4 IPM (mono/col.), 20-sheet ADF, Super G3 fax, Scan to mobiles, Full HD Movie print, Wi-Fi connectivity, AirPrint, mobile print. Canon Ink Jet – 4 in 1 PIXMA MX494 Print, Scan, Copy and Fax, ISO: ESAT speed 8.4/4.4 IPM (mono/col.), 20-sheet ADF, Super G3 fax, Scan to mobiles, Full HD Movie print, Wi-Fi connectivity, AirPrint, mobile print. PG-445, CL-446 or PG-445XL, CL-446XL. INK
G3Q60A “HP Laserjet M130fw mfp (Supplies : CF217A)” “4in1,printer-scanner-copier -Fax -22 ppm-600dpi-ADF-256MB-Flatbed- Wireless , Network, ePrint, AirPrint, WiFi Direct, -10,000 pages per month”
The Epson Expression 13000XL Pro Flatbed Scanner is a professional-grade solution for scanning large-format media with studio-level quality. It offers a generous flatbed size up to 12.2″ × 17.2″, ideal for photos, artwork, maps, and more. Also, it delivers high resolution—2,400 dpi optical, expandable to 4,800 dpi via Micro Step Drive—for sharp, detailed scans. Moreover, it provides 3.8 Dmax density and 48-bit color depth, ensuring rich tones and excellent contrast. Furthermore, Epson’s MatrixCCD and ReadyScan LED technologies capture vibrant, true-to-original color without warm-up delays. In addition, the scanner includes Easy Photo Fix, one-touch color restoration, and dust removal tools for old or faded images. It also supports batch scanning, boosting productivity by processing multiple originals in one go. Plus, users can add the optional transparency unit to scan film and slides up to 12″ × 16.5″, expanding versatility. Moreover, the Pro includes LaserSoft Imaging SilverFast AI software with calibration targets and multi-exposure features for professional editing. It offers USB 2.0 connectivity, works with both Mac and Windows, and comes with TWAIN drivers for wide software compatibility. The unit measures approximately 25.8″ × 18″ × 6.2″ and weighs 31.5 lb, built for desktop use in studios or archives. While it’s discontinued and succeeded by newer models, users still praise its image clarity and film scanning capability. For photo pros, artists, and archivists, this scanner delivers exceptional quality and versatility. Check other options here! Specifications: A3 graphics scanner : Professional results up to A3 format Superior quality : 2,400 x 4,800dpi resolution High precision : Micro Step Drive technology
NCTS USB Barcode Scanner – High-speed wired scanner for both 1D and 2D barcodes with auto-sensing mode.Plug-and-play solution ideal for retail, inventory, and logistics operations. Model: NCTS 1D/2D Barcode Scanner (USB Wired) Color: Black Scan Type: Image-based CMOS scanner Supported Barcode Types: 1D: Code 128, Code 39, EAN-13, UPC-A, Codabar, ISBN, etc. 2D: QR Code, PDF417, Data Matrix, Aztec, etc. Supported Barcode Types: 1D: Code 128, Code 39, EAN-13, UPC-A, Codabar, ISBN, etc. 2D: QR Code, PDF417, Data Matrix, Aztec, etc. Interface: USB 2.0 (Plug-and-play, no driver required) Scan Speed: Up to 300 scans/second Resolution: ≥ 4mil (0.1mm) Scan Modes: Manual trigger Auto-sensing Continuous mode Scan Modes: Manual trigger Auto-sensing Continuous mode Light Source: White LED illumination + red aiming line Indicators: LED and buzzer for scan confirmation Power Supply: DC 5V (via USB port) Cable Length: ~1.5 meters Build: ABS plastic, ergonomic handheld design Compatibility: Windows, macOS, Linux, Android Applications: POS, inventory, logistics, healthcare, warehouse use
A versatile wireless 2D barcode scanner with desk stand—Beurotika BS104WS supports auto-scan, continuous, and manual modes, with up to 200 scans per second and a 2000mAh rechargeable battery for all-day use. The Beurotika BS104WS is a high-performance wireless 2.4GHz 2D barcode scanner designed for retail, warehouse, logistics, and office environments. It comes with a convenient desktop stand for hands-free operation and features a 32-bit high-speed processor for fast, accurate decoding of 1D and 2D barcodes—including QR Code, Data Matrix, PDF417, and more Three scanning modes: Auto-scan, continuous scan, and manual trigger—ideal for different workflow needs Scanning speed: Up to 200 scans per second for rapid data capture Wireless range: Reliable 2.4GHz connection (via USB dongle) for cord-free mobility Built-in battery: 3.7V 2000mAh lithium-ion battery offering up to 16 hours of continuous use Ergonomic handheld design with desk stand for flexible countertop or portable use Plug-and-play setup via USB receiver—no drivers required for most systems
Barcode Reader Wireless 2D S20W Wireless 2D Barcode Scanner | S20-W Name: Wireless 2D Barcode Scanner Model: S20-W Interface: USB Color: Black